Scraper



(No Model.)

D. H. SWBENEY.

SGRAPER. No. 323,972. Patented Aug. 11, 188.5.

iINiTEn Sterns PATENT UFFICI-3.

DAVID H. SVVEENEY, OF FITUHBURG, MASSACHUSETTS.

SCRAPEPL.

SPECIFICATION forming part of Letters Patent No. 323,972, dated August 11, 1885.

Application filed May 20, 1885.

T0 all whom it may concern:

Be it known that I, DAVID H. SWEENEY,

of Fitchburg, in the county of Vorcester,`

State of Massachusetts, have invented a certain new and useful Improvement in Scrapers, of which the following is a description sufliciently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a side elevation of my improved scraper;Fig.2, a vertical longitudinal section of the same; Fig. 3, an end elevation of the head-piece detached; Fig. 4, an end elevation of the body-piece B and its flanges detached, looking in the direction of the arrow p and Fig. 5, an end elevation of said bodypiece, looking in the direction ofthe arrow w.

Like letters of reference indicate corresponding parts in the different gures of the drawings.

My invention relates to that class of scrapers or clearers which are designed for scraping or cleaning out aqueduct or water pipes; and it consists in a novel construction and arrangement ofthe parts, as hereinafter more fully set forth and claimed, the object being to produce amore desirable and effective device of this character than is now in ordinary use.

The nature and operation of the improvement will be readily understood by all conversant with such matters from the following explanation.

In the drawings, A represents the basepiece; B C, the body-pieces, and D the headpiece. The body-pieces are cylindrical in form and exteriorly screw-threaded at either end. The inwardlyprojecting ends oi' the head and base pieces are also cylindrical in form and exteriorly screw-threaded. A stout coiled spring, E, connects the pieces A B, these pieces being respectively screwed into the opposite ends of said spring, as shown in Fig. 2. The pieces B C and G D are also connected in substantially the same manner as the-pieces A B by means of the coiled springs H J, into the ends of which springs they are respectively screwed.

The pieces A B C are respectively provided (No model.)

with tlanges or plates K L M, and the anges L M respectively provided with four rea-rward] y-proj ectin g eyes, a: m, arranged at regular intervals near their corners, as shown in Figs. 4 and 5.

Hinged at o by their lower or inner ends to the outer face of the dange K there are four arms, N, arranged at regularintervals around the piece A, each arm being provided with au inwardly-projecting eye, z, and said eyes connected with the eyes on the flange L by stout coiled springs O, which act oontractively to keep the arms N against the flange K.

Disposed between the edges m, and hinged at y by their inner ends to that side of the flangeL which is nearest the piece A, there are four scrapers, P, provided on their sides nearest the head-piece D with eyes a, said eyes being connected by stout coiled springs It with eyes m on the flange M, and said springs acting contractively to draw the scrapers P against the flange L.

Hinged ati to that side of the flange M which is nearest the iange L there are four scrapers, S, provided on their sides next the head D with eyes l, said eyes being connected with eyes r on the head D by stout coiled springs T, acting contractively to keep the scrapers S against the iiange M. A guardwheel, W, is journaled in a bracket, u, attached to each of the scrapers S P on the side Ynearest the base A, the peripheries of said wheels projecting slightly beyond the ends of said scrapers to keep said ends out of close contact with the pipe and prevent the scraper from catching or binding on the interior of the same, and also, in case of necessity, to enable the scraper to be withdrawn. Four wheels, Y, are also journaled in the head D, one opposite each of the eyes r, to prevent said head from coming into contact with the pipe, in substantially the same manner as the wheels W keep the scrapers S P out of contact therewith. The head D is also provided with four backwardly-inclined curved springs, F, one being.

disposed between each pair of the wheels Y, said springs serving as guides to center the scraper and direct it properly through the pipe. A rubber scraper, Q, is attached to the outer side of each oi' the arms N, said scrapers being curved on their ends or outer edges and large enough. to touch each other at their IOO sides, thus, when united as shown in Fig'. l, forming' a circular packing or flange adapted to iit closely in the pipe. An annular rubber disk, X, having' a central perforation through which the outer end of thebase-piece A passes, is mounted thereon and secured by the nut (l,

which is locked by the pin 0, the disk acting i ers S P Q actingV to remove the scale, rust,

mud, &c.. and other obstructions in a manner which will be readily obvious without a more explicit description.

It will be obvious that the springs l ll J and O lt l render the body ot' the scraper ilexil ble and enable it to pass through saddlepiprs and around ordinary curves or bends in the g pipe whether the same are vertical or lateral;

also, that the Scrapers S l Q will yield to enable them to pass any inequality ot' surface or fixed obstructions in the pipe.

Having' thus explained my invention, what l claim is l. In a scraper for scraping or cleaning the interior ol'l a water-pipe, the combination ot' the following,` instrumentalities, to wit: a 'flexible body consisting ot' a base-piece, a head-piece, Iand one or more ilanged body-pieces connected by coiled springs, a series of hinged Scrapers arranged radially around the bodypiece or pieces, springs adapted to draw or keep the hinged Scrapers at right angles to the body when in usc, guard-wheels for keeping1 the scrapers out ot' close contact with the interior ot' the pipe, guidesprings attached to the headspiece `for centering; the same, and a suitable packing' disposed at the rear ot' the scraper, against which the water presses in forcing' the scraper through the pipe, substantially as described.

2. In a scraper l'or scraping or cleaning; the interior of a water-pipe, the base-piece A, provided with the flange K, hinged arms N, scrapers Q, and packing-disk X, the l'langed body-pieces B C, provided with the hinged scrapers S l?, the head piece l), and springs (l lt T E ll J, conibined and arranged to operate substantially as set forth.

lt will be understood that diii'erent sizes ot' l Scrapers are to be used, according to the sizes ot' the pipes to be scraped or cleaned, and that after the scraper has passed through the pipe the pipe should be flushed to washout the matter detached thereby.

If desired, one of the body-pieces l C may be omitted. The wheels 'W Y may be omitted, although it is preferable to use them.

also

3. .ln a scraper for scraping' or cleaning the interior oi'l a water-pipe, the wheels W, journaled in brackets on thehing'ed scrapcrs l?, in combination with the pieces A B D, springs ior V[leid bly connecting said pieces, and a suitable packing for the scraper, substantially as described.

XVitnesses: DAVll) H. SWTEFNEY.

(l. E. F. HAYWMLD, JOHN W. W ALsH. 

